EUROPEAN POLYMER JOURNAL
·
2022
·
IF 5.546
Liuyue Zhong,Tingcheng Li,Junheng Zhang,Junsheng Wang,Daohong Zhang
Development of high-performance thermosets with simultaneously improved flame retardancy, toughness and strength but unaffected glass transition temperature (T g ) has been a great challenge. In this work, hyperbranched phosphorus-containing polysiloxane functionalized halloysite nanotubes (HBPPSi-HNTs) were synthesized to prepare flame-retarding, mechanically-strong and tough epoxy composites. The tensile and impact strengths of the composites with 5.0phr HBPPSi-HNTs were improved by 23.7 % and 48.8 % respectively compared with the neat epoxy resin. The epoxy composites also exhibited excellent flame-retardancy due to the instantaneous gas-phase and condensed-phase flame retardant behavior of HBPPSi-HNTs. The composite with 10.0phr HBPPSi-HNTs passed UL-94V-0 rating, with an LOI value as high as 42.6 %. And compared with neat epoxy resin, the peak of heat release rate (PHRR), total heat release (THR), total smoke production (TSP) and CO generated per second (COY) were reduced by 50.1 %, 32.6 %, 30.1 % and 39.5 %, respectively. This work presented a general approach to prepare epoxy composites with simultaneously improved flame retardancy and mechanical properties without sacrificing the glass transition temperature.
研究领域:
材料科学
·
化学工程
✓ 已验证
DOI
高影响因子
Materials Today Energy
·
2021
·
IF 7.311
M. Xia,S. Zhao,Q.-M. Hasi,Y. Zhang,L. Li,L. Chen
Solar steam generation (SSG) has emerged as one of the most efficient strategies for desalination and sewage treatment. In this work, we present an approach for the fabrication of a novel oil-repellent solar photothermal material (named as O-WF-HNTs), which is derived from wood fibers (WF) and halloysite nanotubes (HNTs) for efficient SSG. The porosity of the premodified sample (WF-HNTs) was about 89%, the light absorption was over 95%, and the thermal conductivity was 0.206 W m −1 k −1 . Under the irradiation of 1.0 kW m −2 , the solar energy conversion efficiency reaches up to 84% with better salt tolerance (the evaporation efficiency in 10% NaCl solution is 76%). After a surface modification, interestingly, the wettability of the as-resulted O-WF-HNTs changes to be hydrophilic and oil-repellent. The solar energy conversion efficiency of the O-WF-HNTs can reach as high as 79% in oily water under 1.0 kW m −2 illumination, while the untreated sample, i.e. WF-HNTs, only shows a very low solar energy conversion efficiency of 48% due to n-hexadecane blocks the channels of material and in turn hinders water transportation during solar vaporization. Compared with the existing photothermal materials, which usually suffer the shortcomings of either complicated preparation or oleophilic property, our materials take the advantages of a simple, cost-efficient, and scalable fabrication process with low-cost natural clay and wood fibers as raw materials, in particular oil-repellency which makes it possible for SSG even in oily water or sewage, thus the practical application of SSG is further broadened.
研究领域:
材料科学
·
环境科学
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DOI
高影响因子
COMPOSITES PART B-ENGINEERING
·
2019
·
IF 6.864
Sheng Shang,Xiao Ma,Bihe Yuan,Gongqing Chen,Yaru Sun,Chuyuan Huang,Song He,Huaming Dai,Xianfeng Chen
A novel nano-clay flame retardant (HNTs@MEL-PA) is prepared by modifying halloysite nanotubes (HNTs) with supramolecular self-assembly technology using melamine (MEL) and bio-based phytic acid (PA) as the building blocks. Transmission electron microscopy images and Fourier transform infrared spectra show that the surface of HNTs is successfully decorated with MEL-PA supramolecular aggregates by hydrogen bonding . The feasibility of using HNTs@MEL-PA as a flame retardant for polypropylene (PP) is explored. Compared with PP/HNTs composites, the dispersion of HNTs@MEL-PA and its interfacial interactions with PP matrix are greatly improved. Heat release of PP is decreased in a certain degree and its smoke release is greatly reduced by HNTs@MEL-PA. With the addition of 15 wt% HNTs@MEL-PA, total smoke production of PP is decreased from 15.7 to 10.2 m 2 , indicating the greatly improved fire safety. Flame retardant and smoke suppression mechanisms of HNTs@MEL-PA are proposed based on thermal decomposition results and the analysis on char residue .
研究领域:
材料科学
·
化学工程
✓ 已验证
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2019
·
IF 6.97
Xiujuan Zhao,Qinli Wan,Xiaodie Fu,Xiao Meng,Xianfeng Ou,Ruowei Zhong,Qinghua Zhou,Mingxian Liu
In this study, the toxicity of two one-dimensional (1D) nanoparticles, halloysite nanotubes (HNTs) and chitin whiskers (ChNCs), was investigated in detail. Both in vitro and in vivo models were applied to evaluate the toxicity by cell viability staining, apoptosis assay, and reactive oxygen species generation. Particularly, the toxicity of HNTs and ChNCs was compared using an in vivo model Caenorhabditis elegans; their toxicity was assessed using the in vitro models, mouse bone marrow mesenchymal stem cells (mBMSCs) and rat osteosarcoma cells (UMR-106). In vitro, both HNTs and ChNCs exhibited low toxicity at concentrations lower than 50 μg/mL, but HNTs showed higher toxicity than ChNCs at higher concentrations such as 200 μg/mL. Cell viabilities of mBMSCs and UMR-106 were 73.4 and 77.1% at the HNT concentration of 200 μg/mL, while these were 96.2 and 99.8% at the ChNC concentration of 200 μg/mL, respectively. In vivo, HNTs exhibited a side effect on the C. elegans reproduction but did not influence the lifespan and other phenotypes, which suggested that HNTs had no long-term toxicity effects. While ChNCs did not result in obvious alterations in the phenotype of worms below the concentration of 2.5 mg/mL, the brood size of C. elegans decreased at ChNC concentrations of 10 and 50 mg/mL. Moreover, ChNCs had the side effect on the development of C. elegans at the high level. However, ChNC exposure at the concentrations of 10 and 50 mg/mL induced the longer fast movement periods and extended lifespan of C. elegans. It demonstrated that both HNTs and ChNCs had good biocompatibility below the concentration of 2.5 mg/mL. The toxicity studies of these two 1D nanoparticles contributed to their great significance for various biomedical applications.
研究领域:
纳米技术
·
毒理学
·
生物材料科学
·
细胞生物学
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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2026
·Vol. 61
·期 31
·22710-22728
·
IF 4.4
Wang Yanming,Zhao Jiale,Li Lingwei,Zhang Yijiao,Wang Yao,Gao Xiaohong,Su Bihai,Li Feibo,Wang Xiaojing,Shi Linlin,Zhang Zhixiao,Zhang Xiaoliang,Mu Jingbo,Dong Yu
Proton exchange membranes (PEMs) attract attention for their tunable proton-conducting channels, but building effective transport networks and improving long-term stability in composites remain key challenges. In this study, a novel SPI composite PEM reinforced with 1,3-propane sultone-modified MXene/halloysite nanotube (SMH) fillers was successfully prepared. Systematic material characterization and performance tests revealed that the incorporation of SMH fillers significantly improved the physicochemical properties of the membrane. Moreover, the –SO 3 H groups on SMH and the –NH 2 groups on APTES can form hydrogen bonds and acid–base pairs with the –SO 3 H groups on SPI, thereby enhancing the tensile strength and proton conductivity of the composite film. The composite membrane exhibited a tensile strength of 80.3 MPa and a proton conductivity of 313.9 mS cm −1 (80 °C, 100% RH), representing 26.2% and 29.5% enhancements compared to the pristine SPI membrane, respectively. It assembled fuel cell with the SPI-2SMH composite membrane demonstrated a maximum power density of 259.1 mW cm −2 . More importantly, the radical scavenging effect of the variable-valence metal ions in MXene endowed the composite membrane with improved long-term stability under fuel cell operating conditions, extending the open-circuit voltage decay time to 3.3 times that of the pure SPI membrane. This study provides a new strategy for developing PEM materials with both high proton conductivity and enhanced durability for fuel cell applications. Graphical abstract
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DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2026
·
IF 8.7
Chenxi Li,Shuyuan Hu,Zhenhua Huang,Dong Zhang,Changsheng Liu,Fangping Chen
Uncontrolled hemorrhage is one of the leading causes of traumatic death, while conventional clay hemostats carry insufficient procoagulant activity, poor adhesion, weak anti-dispersion capability, and the potential risk of distal thrombosis. Inspired by nasal cilia particle capture, poly(vinyl alcohol)/quaternized starch (PVA/QSt) nanofibrous membranes with Oriented (NFM O), Oriented bead-on-string (NFM-OB), Non-oriented bead-on-string (NFM-NOB), and Non-oriented (NFM-NO) four different structures, were fabricated by electrospinning in this study. The results showed that the random beaded nanofibrous membrane (NFM-NOB) exhibited the best hemostatic performance. Based on this structure, we then proposed an integrated “structure regulation-component synergy” strategy and fabricated halloysite nanotubes (HNTs)-reinforced PVA/quaternized starch (HPQ) nanofibrous membranes via in situ electrospinning. By regulating the HNTs content, a series of HPQ nanofibrous membranes were prepared. The optimal HPQ-40 achieved rapid hemostasis with an ultra-low particle loss rate of 1.2% ( vs. 68.4% for QuikClot®) and 7.2 g/g blood absorption capacity. It achieved hemostasis through triple synergies: platelet capture by non-oriented, bead-on-string fibers via topological interlocking, rapid plasma absorption/intrinsic pathway activation by the hollow tubular structure of HNTs, and electrostatic erythrocyte aggregation/antibacterial activity by positively charged QSt. In rat liver laceration and femoral artery puncture models, HPQ-40 shortened hemostatic time by 52.9% and 58.9%, and reduced blood loss by 82.1% and 77.6%, respectively, with excellent biocompatibility. This study provides important experimental evidence and a new strategy for the design and developing high-performance biosafe hemostatic materials.
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DOI
高影响因子
Minerals
·
2026
·Vol. 16
·期 3
·307
·
IF 2.7
Yunxiang Li,Xuehui Li,Ke Wang,Peilin Chen,Xiaowei Li,Guocheng Lv,Libing Liao
Naturally occurring halloysite nanotubes (HNTs), a clay mineral characterized by a unique dual-charge architecture, offer a promising strategy for enhancing the performance of composite polymer electrolyte (CPE). In this work, HNTs are introduced as a low-cost, functional filler to simultaneously address two key limitations of poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP)-based CPE: low ionic conductivity and inadequate lithium-ion transference number. The negatively charged outer surface of HNTs facilitates Li+transport, while the positively charged inner lumen confines anions such as TFSI−. Controlled acid etching (6 M HCl, 12 h) further optimizes this structure by removing surface impurities and enlarging the lumen, thereby enhancing both charge-directed ion transport pathways. The resulting HNT-modified CPE achieves a high ionic conductivity of 6.1 × 10−4S⋅cm−1and a Li+transference number of 0.73. When assembled into Li||CPE||LiFePO4cells, the electrolyte enables stable cycling over 300 cycles at 0.2C, retains 119.2 mAh/g at 2C, and delivers 85.7 mAh/g even at 5C, demonstrating excellent cycling stability and rate capability. This study reveals the potential of mineral-derived nanomaterials, with their inherent structural and physicochemical properties, to serve as key functional components in high-performance batteries.
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产品关联
DOI
高影响因子
Materials Science & Engineering C-Materials for Biological Applications
·
2021
·
IF 7.328
Hongyuan Zhao,Bo Li,Runqiang Liu,Yuqi Chang,Hongliang Wang,Lin Zhou,Sridhar Komarneni
Herein, a cost-effective and scalable ultrasound assisted approach was proposed to prepare the nanocomposite of halloysite nanotubes/zirconia/carbon black (Hal/ZrO 2 /CB), which was used to fabricate a novel electrochemical sensor for the highly sensitive determination of methyl parathion (MP). In the Hal/ZrO 2 /CB nanocomposite, Hal with large specific surface area and numerous active sites could enhance the adsorption capacity and accelerate the redox reaction of MP; ZrO 2 nanoparticles with high affinity toward the phosphate group could contribute to good recognition performance for MP; CB nanoparticles with good dispersibility formed an interconnected pearl-chain-like conductive network. Benefitting from the synergistic effect of the three components, the Hal/ZrO 2 /CB/GCE (glassy carbon electrode) sensor showed a remarkably low detection limit of 5.23 nM in a good linear MP detection range of 0.01–10 μM. The Hal/ZrO 2 /CB/GCE sensor possessed a pretty decent practicality with satisfactory RSD and recovery results for the determination of MP in peach, pear, and apple juices. Therefore, the Hal/ZrO 2 /CB/GCE sensor has important implication on the quite sensitive detection of MP.
研究领域:
分析化学
·
纳米科学与技术
·
环境监测
·
食品安全
·
电化学传感
·
农药残留检测
✓ 已验证
DOI
高影响因子
CONSTRUCTION AND BUILDING MATERIALS
·
2020
·
IF 4.419
Huiting Liu,Jianzhou Jin,Yongjin Yu,Huimin Liu,Shuoqiong Liu,Jiyun Shen,Xiujian Xia,Hongfei Ji
Excellent physical and chemical properties of halloysite nanotube make it potential to reinforce cement composites. In this study, effects of halloysite nanotube on mechanical properties of oil well cement were investigated. The results showed that the compressive and flexural strength of cement with 3% halloysite nanotube was increased by 40.8% and 49.2%, respectively and the elasticity modulus decreased by 20.01% after curing for 28 days, which demonstrated that halloysite nanotube cement had high strength and good toughness. TG-DTA, SEM, XRD, MIP tests were carried out to study the hydration products and microstructure changes in cement samples after adding halloysite nanotube. Optimized hydration products, lower permeability up to 38.82%, cross-linking and denser microstructure all contributed to excellent mechanical properties of oil well cement with halloysite nanotube.
研究领域:
材料科学
·
石油工程
·
水泥化学
·
纳米复合材料
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2014
·Vol. 49
·期 20
·7181-7191
·
IF 2.305
Mu Bin,Zhang Wenbo,Wang Aiqin
A novel superparamagnetic gold/halloysite nanotubes/Fe 3 O 4 (Au/HNTs/Fe 3 O 4 ) nanocomposite with coaxial structure was designed and fabricated by selective decoration of the inner lumen and the external wall of halloysite nanotubes (HNTs) based on the difference inside/outside surface charges. The structure and composition of Au/HNTs/Fe 3 O 4 were characterized by transmission electron microscope, powder X-ray diffraction, and X-ray fluorescence. The results indicated that Au nanorods selectively generated within the lumen of HNTs, while Fe 3 O 4 nanoparticles uniformly deposited on the external wall. It was particularly worth mentioning that the structure of HNTs was not destroyed in the preparation process of Au/HNTs/Fe 3 O 4 nanocomposites. The catalytic activity of the as-prepared Au/HNTs/Fe 3 O 4 was investigated for the reduction of 4-nitrophenol in the presence of NaBH 4 . The Au/HNTs/Fe 3 O 4 nanocomposites exhibited excellent catalytic activity and cycling stability according to the kinetic data of the catalytic reduction reaction. In addition, the Au/HNTs/Fe 3 O 4 catalysts can be easily manipulated by an external magnetic field for recycling.
研究领域:
纳米材料学
·
催化化学
·
无机化学
·
环境功能材料
·
纳米复合材料
✓ 已验证
DOI
高影响因子
JOURNAL OF VINYL & ADDITIVE TECHNOLOGY
·
2025
·
IF 3.6
Bin Li,Jianting Zhang,Zhiheng Wang,Chenyuan Li,Weihong Guo
Polybutylene adipate terephthalate (PBAT) has good flexibility and tear resistance, but when used as a film, it has problems such as low tensile strength and poor gas barrier properties. Blending polylactic acid (PLA) with PBAT can effectively compensate for the mechanical performance defects of PBAT. However, blending PBAT and PLA has compatibility issues, and the tensile strength and gas barrier properties of PBAT/PLA (TA) films are still relatively low. Halloysite nanotubes (HNT) are hollow tubular inorganic nanomaterials with high specific strength and stiffness. Incorporating them into polymers can enhance the mechanical properties and gas barrier properties of polymer films. However, HNT tends to agglomerate, necessitating surface modification to improve its poor dispersibility in polymer matrices. In this study, to improve the mechanical properties and water vapor barrier properties of PBAT, PBAT and PLA were blended to prepare a TA blend, and HNT modified with 3-aminopropyl triethoxysilane (KH550) (HNT-NH 2 ) was introduced. A reactive compatibilizer ADR4468 was used to enhance the compatibility between the components. TA/ADR/HNT-NH 2 nano-composite films were prepared. The tensile strength (TS), elongation at break (EB), and water vapor permeability coefficient of the film were optimized to 41.28 MPa, 764%, and 15.6 × 10 −14 g·cm/(cm 2 ·s·Pa), respectively.
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产品关联
DOI
高影响因子
DYES AND PIGMENTS
·
2022
·
IF 5.122
Qing Sun,Jingfeng Zhao,Zhibo Hu,Jian Zhang,Jun Yan,Jiawei Sheng
In this work, we successfully report the design and synthesis of rod-like CoAl 2 O 4 /halloysite hybrid pigment from zeolitic imidazolate framework-67 (ZIF-67, a Co-based MOF) and tubular halloysite via a facile two-step route for the first time. The as-prepared nanostructures were thoroughly characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared reflection (FTIR Spectroscopy), thermogravimetric and differential scanning calorimetry (TG-DSC), X-ray photoelectron spectrometer (XPS), ultraviolet–visible spectrometry (UV–vis) and CIE L* a* b* colorimetric method . XRD patterns indicated that the presence of CoAl 2 O 4 spinel was observed at various temperatures ranging from 800 to 1100 °C. The SEM and TEM images showed that the nano-pigment has a rod-like hybrid structure composed of nano CoAl 2 O 4 particles and SiO 2 . The color performance of the fabricated pigments was evaluated and given suitable color coordinates (L* = 44.72, a* = −14.40, b* = −37.83) and (L* = 42.57, a* = −7.68, b* = −41.14) at the calcination temperature of 1100 °C for 2 h and 3 h, respectively. The mechanism study indicated that these composites were formed by Co 3 O 4 derived of ZIF-67 as highly active cobalt source and Al 2 O 3 decomposed from halloysite substrate as aluminum source. In addition, the corrosion resistance test showed that the CoAl 2 O 4 composites retain crystalline stability, almost no color deviation in CIE chromatic system even after 1 M HCl leaching. Furthermore, the CoAl 2 O 4 /halloysite exhibited excellent thermal and suspension stability, which indicated it could be a promising candidate for ceramic glazes and water-borne coatings. These findings provide insight into a new strategy for the synthesis of clay mineral-based ceramic pigment .
研究领域:
材料科学
·
无机化学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）